I hit with the OS version for a while. I used to play with the old Thunderbolt OS and it had a bit of that same feel. The bottom line was I didn't feel like it had the same solid feel that I've gotten from other new racquets from the Head (LM Radical) or Wilson (N5) line. In a word - it felt "Princey".

my tennis coach actually had a couple of sharks he was hitting with, and he said feel free to try it out. i was too shy, and just tried it out on a couple of serves. it was light, and the neck was really thick. it felt really weird for me, almost like it was hollow or something. i guess im just used to playing with a heavier racket. didnt really get to feel out the power or control of the racket, just that it was pretty light.